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Signal Corps (United States Army) — U.S. Army Signal Corps Coat of Arms Active 3 March 1863 – Present Country … Wikipedia
Railway signal — Not to be confused with Railway signalling. A signal is a mechanical or electrical device erected beside a railway line to pass information relating to the state of the line ahead to train/engine drivers. The driver interprets the signal s… … Wikipedia
Video signal generator — A video signal generator is a type of signal generator which outputs predetermined video and/or television waveforms, and other signals used to stimulate faults in, or aid in parametric measurements of, television and video systems. There are… … Wikipedia
Railway semaphore signal — One of the earliest forms of fixed railway signal is the semaphore. These signals display their different indications to train drivers by changing the angle of inclination of a pivoted arm . Semaphore signals were patented in the early 1840s by… … Wikipedia
Radar signal characteristics — A Radar System uses a Radio Frequency electromagnetic signal reflected from a target to determine information about that target. In any radar system, the signal transmitted and received will exhibit many of the characteristics described below.The … Wikipedia
Flying level — Flying Fly ing, a. [From {Fly}, v. i.] Moving in the air with, or as with, wings; moving lightly or rapidly; intended for rapid movement. [1913 Webster] {Flying army} (Mil.) a body of cavalry and infantry, kept in motion, to cover its own… … The Collaborative International Dictionary of English
Diversity combining — is the technique applied to combine the multiple received signals of a diversity reception device into a single improved signal. Contents 1 Various techniques 2 Switched combining two way radio example 2.1 How signals are evaluated … Wikipedia
Two-way radio — receiver which only receives content. Two way radios are available in mobile, stationary base and hand held portable configurations. Hand held radios are often called walkie talkies or handie talkies. A push to talk or Press To Transmit button is … Wikipedia
Voice over Internet Protocol — (VoIP, IPAEng|vɔɪp) is a protocol optimized for the transmission of voice through the Internet or other packet switched networks. VoIP is often used abstractly to refer to the actual transmission of voice (rather than the protocol implementing… … Wikipedia
Voice over IP — Digital voice redirects here. For the commercial service, see Comcast Digital Voice. Voice over Internet Protocol (Voice over IP, VoIP) is a family of technologies, methodologies, communication protocols, and transmission techniques for the… … Wikipedia
Bell TV — This article is about Bell Canada s satellite TV service. For Bell s IPTV service, see Bell Fibe TV. For the Bell Canada subsidiary that operates TV channels such as CTV, see Bell Media. Bell TV Type Subsidiary of Bell Canada Ind … Wikipedia
